CZ5343U1 - Heating granulate made of wood mass - Google Patents

Description

Wood granules

Technical field

The technical solution concerns wood pellet heating granules consisting mainly of waste generated during industrial wood processing and usable as ecological fuel for all kinds of wood burning equipment.

BACKGROUND OF THE INVENTION

For example, sawdust briquettes, which are produced from waste sawdust by pressing into the shape of a briquette, are known in the field of processing wood residues and fuel residues. Furthermore, a product is known in the form of wood briquette with the addition of waste paper, which is produced on special presses. In order to produce the above-mentioned known products, respectively. briquettes from sawdust or wood chips; mixed with recovered paper so that they have a compact structure and can be distributed, various organic binders are used.

The disadvantage of the known existing briquettes made of sawdust, ev, sawdust with admixtures, lies in particular in their low strength and poor consistency, on the basis of which the finished product exhibits considerable friability. The low compactness of the briquettes also results in a reduced resistance of the product to the absorption of air humidity. These disadvantages do not allow the briquette from sawdust to be used to a greater extent, for example, for the permanent supply of heating plants, heating plants or other large consumers.

The essence of the technical solution

The above-mentioned disadvantages of the prior art largely overcome the wood granulate according to the invention, which consists of thermally processed wood bark and / or wood bark and wood chips and / or wood chips. waste paper and / or sawdust, the admixtures constituting up to 30% by weight of wood mass.

The advantage of the heating granulate according to the technical solution is above all high granulate strength and low disintegration. Another significant advantage is the glass surface of the granulate, which results from the thermal processing of wood bark containing pitch and resin. This glassy surface provides sufficient protection against the absorption of atmospheric moisture by the granulate. The pitch and resin contained in the wood mass is also a natural binder during the granular heat treatment and there is no need to add other binders to the mixture which reduce the ecological value of the fuel. Compared to the known sawdust briquettes produced, wood fuel granulate has a higher calorific value.

Exemplary embodiment

Example 1

For the production of the heating granulate 100 kg of wood was used, which consisted of 90 kg of thermally processed crushed wood bark

-1GB 5343 Ul and 10 kg wood chips. The mixture was compressed into cylindrical granules. The resulting heating granulate had a high strength and a hard glass surface.

Example 2

For the production of the heating granulate 100 kg of wood was used, which consisted of 75 kg of thermally processed crushed wood bark and 25 kg of wood chips. The mixture was compressed into cylindrical granules. Again, the resulting heating granulate had high strength and a hard glass surface.

Example 3

100 kg of wood mass consisting of 80 kg of thermally processed shredded wood bark, 10 kg of shredded waste paper and 10 kg of wood chips was used to produce the heating granulate. The wood mass of this composition was pressed into the form of cylindrical granules, the resulting quality of the heating granulate being given by high strength and glass surface.

Industrial applicability

Wood granulate is a noble eco-friendly fuel with low ash content. It can be used for all kinds of low-capacity and large-capacity heating devices adapted for burning wood.

Claims (1)

PROTECTION REQUIREMENTS Wood fuel granulate characterized in that it consists of thermally processed wood bark and / or wood bark and wood admixtures and / or shredded waste paper and / or sawdust, the admixtures constituting up to 30% by weight wood. mass.